CN109073903A - high power dynamic lens - Google Patents
high power dynamic lens Download PDFInfo
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- CN109073903A CN109073903A CN201780022868.3A CN201780022868A CN109073903A CN 109073903 A CN109073903 A CN 109073903A CN 201780022868 A CN201780022868 A CN 201780022868A CN 109073903 A CN109073903 A CN 109073903A
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- light
- dynamic lens
- wave length
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/264—Arrangements for irradiation
- B29C64/268—Arrangements for irradiation using laser beams; using electron beams [EB]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/264—Arrangements for irradiation
- B29C64/286—Optical filters, e.g. masks
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133769—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers comprising an active, e.g. switchable, alignment layer
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Liquid Crystal (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
A kind of dynamic lens for projecting different output beam shapes include: the first light source for generating the laser diode of target-bound first light beam.Projector generates second light beam with the wavelength different from the first light beam.Beam combiner combines the first light beam and the second light beam, and combined light beam is guided to the focusing surface including lens array, and the first light beam is focused into the output beam shape in target.Lens array includes multiple photosensitive units, and the multiple photosensitive unit includes changing at least one photoreactive groups of molecular shape in response to the luminous energy from the second light beam, to change the orientation of adjacent liquid crystal molecules, this so change the refractive index of photosensitive unit.Also disclose a kind of method for operating dynamic lens to generate output beam shape.
Description
Cross reference to related applications
This PCT Patent Application requires the U.S. Provisional Patent Application Serial Article No. 62/321 submitted on April 12nd, 2016,
The complete disclosure of No. 300 equity and priority, this application is considered as a part of disclosure of this application, and
It is incorporated herein by reference.
Technical field
For projecting the dynamic lens of different output beam shapes in target.
Background technique
Lens are used in various applications, including for such as welding with the application of increasing material manufacturing (" AM ") in target
High power-beam is formed as into output beam shape.This lens allow for bearing in the their entire life of lens by big
The period of amount or the exposure of pulse pair high power-beam.Dynamic type lens can change so that light beam is formed as different shapes.
Up to the present, dynamic lens are not suitable for high power applications also because available dynamic lens have required electrode or its
His friable material is through high power-beam damage therein.
Recently, " for projecting the phase modulation pattern of predefined caustic image on the specified plane of delineation " is being used
Programmable free form (i.e. dynamic) lens field in achieve progress.In " the Efficient of Damberg et al.
Freeform Lens Optimization for Computational Caustic Displays.”Optics Express
Such a programmable free form lens arrangement is disclosed in 23.8 (on April 13rd, 2015 delivers).Hitherto known dynamic
Lens (including those dynamic lens disclosed in Damberg et al. article) use such as the space of video projector
Traditional technology based on liquid crystal over silicon (LCOS) of optical modulator (SLM) device, so that they are not suitable for high power applications.
Be recently developed can be used photoactivated liquid crystal by high power-beam be formed as different output shapes adaptively cover
Mould.For example, with reference to " the Computational Chemistry Modeling and Design of of Marshall et al.
Photoswitchable Alignment Materials for Optically Addressable Liquid Crystal
Devices."142LLE Review at 151(2015).U.S. Patent Application Publication the 2014/0252687th (2014 9
The moon 11) a kind of system for executing increasing material manufacturing (" AM ") using mask is disclosed, which is modified using liquid crystal
Then the polarization of a part of high power-beam carries out exposure mask to it by polariscope, remainder is made to pass through substrate target.
Because a part of high power-beam is obscured from target and thus cannot be used for be using adaptive mask
Useful work in system, so there is still a need for the essentially all high power-beam passed through can be formed as defeated in target
The adaptive lens of beam shape out.
Dynamic lens according to the present invention allow the target or frame of change in size in the limitation of the size of lens array.
Dynamic lens also allow the variable power density depending on frame size.This means that frame size may be with component density
It reduces and increases.In addition, it is different from using the system of adaptive mask, it is disobeyed using the building rate of the AM system of dynamic lens
Rely in component density (frame utilization rate).
Summary of the invention
The present invention provides a kind of for projecting the dynamic lens of different output beam shapes in target.Dynamic lens
First light source including generating the first light beam under first wave length.Projector including second light source, which generates to have, is different from the
Second light beam of the second wave length of one wavelength, and the second light beam is formed as into initial pattern.Dynamic lens further include: focus
Face comprising: the lens array of photosensitive unit, in response to being reflected by the stimulation of the second light beam with second wave length
First light beam；And beam combiner, for combining the first light beam and the second light beam, and combined light beam is guided to focusing
On face.Focusing surface includes the lens array of photosensitive unit, and the lens array is according to initial pattern in response to by having the second wave
The stimulation of the second long light beam and form phase pattern, the first light beam is formed as output beam shape in target.
Therefore, the present invention its widest aspect provide can dynamic regulation output beam shape, it is meant that can be with
Quickly change its shape and focus.The present invention also provides output beams, wherein essentially all of first light beam is transferred to
Target.This is the improvement to the prior art " mask " type Beam former, the prior art " mask " type Beam former cover or
A part of the first light beam is guided to leave target to generate desired beam shape.
As shown in table 1, the example " hollow wheel " with about 18% surface density is manufactured using mask Beam former to tie
Every layer of the increasing material manufacturing process of structure needs to spend 22s.Substituting into dynamic lens of the invention, (it is by essentially all of high power
One light beam is directed to target), increasing material manufacturing process can manufacture identical layer in 5.122s.This is about four (4) times and changes
Into.
The hollow wheel construction of table 1-~18% component surface density
As shown in table 2, the example " solid lifter " with about 75% surface density is manufactured using mask Beam former
Every layer of the increasing material manufacturing process of structure needs to spend 4.4s.Substituting into dynamic lens of the invention, (it is by essentially all of Gao Gong
The first light beam of rate is guided to target), increasing material manufacturing process can manufacture identical layer in 3.62s, improve 20%.
Table 2- solid lifter structure~75% component surface density
It is contemplated that the high power for essentially all of high power-beam can be formed as to desired beam shape
Many applications of dynamic lens.Some such applications are as follows: plastics and composite welding, metal weld, for the conformal of injection mold
Cooling, the conformal cooling for hot stamping die, Treatment of Metal Surface (polish, be tempered, component annealing, laser peening), original
Type design (is cast for the low moderate-yield replacement process of light structures component；Composite material).This high power dynamic is saturating
Mirror can be applied to many industries, comprising: such as motor vehicle, aerospace production (bracket, nozzle, pump case), military (scene
Maintenance/service), medical implant and prototype.
Detailed description of the invention
It will readily appreciate that other advantages of the invention, because when considered in conjunction with the accompanying drawings, by reference to described in detail below,
Other advantages of the invention may be better understood, in the accompanying drawings:
Figure 1A is the schematic diagram according to the dynamic lens of present disclosure；
Figure 1B is the cross-sectional view of the schematic diagram of Figure 1A, shows the first light beam at the 1B-1B of part；
Fig. 1 C is the cross-sectional view of the schematic diagram of Figure 1A, show the first light beam is converted by lens array it is defeated to be formed
The expression of beam shape out；
Fig. 1 D is the cross-sectional view of the schematic diagram of Figure 1A, shows the third that output beam shape is limited at the 1D-1D of part
Light beam；
Fig. 1 E is the front view of diode laser matrix；
Fig. 2A is the diagrammatic cross-section of the photosensitive unit in lens array, which keeps the light beam passed through curved
It is bent；
Fig. 2 B is the diagrammatic cross-section of the photosensitive unit in lens array, which keeps the light beam passed through curved
It is bent；
Fig. 3 is the block diagram according to the part of the dynamic lens of present disclosure；
Fig. 4 is the schematic diagram of the arrangement of photosensitive unit；
Fig. 5 is the schematic diagram of the alternative arrangement of photosensitive unit；
Fig. 6 is the figure of the azobenzene molecule in two kinds of various configurations；
Fig. 7 is the schematic diagram of the adaptive mask of type known in the state of the art；
Fig. 8 is another schematic diagram of the adaptive mask of type known in the state of the art；
Fig. 9 is " the Efficient Freeform Lens Optimization in Damberg et al.
It is shown in Computational Caustic Displays. " Optics Express 23.8 (on April 13rd, 2015 delivers)
Phase pattern example；
Figure 10 is " the Efficient Freeform Lens Optimization in Damberg et al.
It is shown in Computational Caustic Displays. " Optics Express 23.8 (on April 13rd, 2015 delivers)
The output beam shape formed by the light beam focused according to the phase pattern of Fig. 9；
Figure 11 is such as open at prior art U.S. Patent Application Publication the 2014/0252687th (September 11 in 2014)
" System for Performing Additive Manufacturing (' AM ') Fabrication Process
Using a High-Power Diode Array and a Mask, " schematic diagram；
Figure 12 is such as open at prior art U.S. Patent Application Publication the 2014/0252687th (September 11 in 2014)
Figure 11 " show the light from diode array a part how during manufacturing process by polarizer reflective to prevent it
Reach substrate " system schematic diagram；
Perspective view of the Figure 13 with about 18% surface density " hollow wheel " component；
Figure 14 is the saturating of multiple " hollow wheel " components in the maximum building area of 158 components in the 1x0.5m of Figure 13
View；
Perspective view of the Figure 15 with about 75% surface density " solid lifter structure " component；And
Figure 16 is the top view of the slice of Figure 15 " solid lifter structure " component.
Specific embodiment
Referring to attached drawing, wherein run through several views, identical appended drawing reference indicates that corresponding component, dynamic lens 20 are logical
Often it is shown for projecting multiple and different output beam shapes 22 in the target 24 usually shown.Dynamic lens 20 include:
The first light source 26 of laser diode 28, to be sufficiently used for the height of increases material manufacturing technology (such as selective layer sintering (SLS))
Power and towards in the path of target 24 32 first wave length λ 1 generate the first light beam 30, as shown in Figure 1A, it can be plane
And transverse to path 32 be arranged.For example, the first light beam 30 can have about 10kW or bigger power.Of the invention is dynamic
State lens can be used together with having the first light beam 30 from the broad power band of 100W to more than 100kW.Target 24 can also
Be it is contoured, and some or all of target 24 can be set into the path 32 of the first light beam 30 it is at an acute angle or
Obtuse angle.
Controller 34 generates the control signal 36 for corresponding to initial pattern 38, and control signal 36 is transmitted to projector
40, projector 40 includes: second light source 42, generates second light beam with the second wave length λ 2 different from first wave length λ 1
44；And spatial light modulator 46 (SLM), the second light beam 44 is formed as by initial pattern 38 according to control signal 36.It can be with
Initial pattern 38 is formed in the second light beam 44 using many different devices, including but not limited to SLM device, LCD, LED, pre-
Printthrough gelatin foil, cathode-ray beam, digital light processing (DLP) device etc..It can also include the additional of such as lens and optical filter
Optical module.
As shown in Fig. 2A, Fig. 2 B, the lens array 50 including the photosensitive unit 52 being arranged on the carrier-pellet 54 of glass
Focusing surface 48 reflects the first light beam 30, wherein the degree and directional response that reflect are in photosensitive unit 52 by with second wave length λ's 2
Second light beam 44 excites and changes.The initial pattern 38 of the light of second wave length λ 2 from projector 40 makes in lens array 50
Photosensitive unit 52 formed phase pattern 68, the phase pattern 68 make the first light beam 30 passed through be bent and focus in mesh
Output beam shape 22 is formed on mark 24.Such as can increasing material manufacturing (" AM ") application in predetermined output beam shape 22,
In increasing material manufacturing application, output beam shape 22 is used to generate the component with predetermined shape, as shown in Figure 13 to Figure 16.
For example, can in rapid prototyping increasing material manufacturing or output beam shape 22 for weld may have it is different from focusing surface 48
Profile, distance and/or orientation component application in be dynamically generated output beam shape 22.
As referring to figure 1E, first light source 26 may include: point source array, have a part for generating the first light beam 30
Each of point source.For example, point source can be individual laser diode 28.Point source can be individually controlled according to perspective view
ON/OFF processed is changed intensity, so that each of point source selectively irradiates the corresponding part of the focusing surface.It is micro-
Mirror 29 can cover each of point source, to focus and guide the part for the first light beam 30 for carrying out self-corresponding point source.
In practice, the output beam shape 22 that the arrangement of present disclosure can permit the capacity beyond lens array 50 is made
With on guiding the first light beam of pure frame 30 on the entire frame to focusing surface 48.For example, lens array 50 may not be able to incite somebody to action
First light beam 30 is focused and is guided always to the opposing corner areas of focusing surface 48 from a corner of lens array 50.In such case
Under, irradiate the first light beam of pure frame 30 of entire focusing surface 48 part can be directed to desired output beam shape 22 it
The part of outer target 24, they may waste energy there and they may cause other adverse effects, such as make
The undesirable partial melting of target 24 otherwise has an adverse effect.It, can be with according to the aspect of present disclosure
It is individually controlled the part of first light source 26, according to perspective view to inhibit that desired output light cannot be formed in target 24
The point source of harness shape 22.Controller 34 can be generated can be according to the predetermined of desired output beam shape 22 and lens array 50
First light beam 30 is focused and is guided to the output beam shape 22 in target 24 by ability and the perspective view changed.Then, may be used
With each point source or point source group selectively irradiated according to perspective view in first light source 26, wherein stopping that expectation cannot be focused on
Beam shape 22 on point source.
Beam combiner 64 (it can be the dichroscope that the different wave length λ 1 to light, λ 2 have different reflectivity) can be with
It is arranged between first light source 26 and focusing surface 48 and is arranged with deflection angle 66, for draws the second light beam 44 from projector 40
It is directed on focusing surface 48 and the first light beam 30 from first light source 26 is allowed to pass through to focusing surface 48.In other words, light beam
Combiner 64 combines the first light beam 30 and the second light beam 44, wherein combined light beam 30,44 be then channeled to it is poly-
Focal plane 48.For example, deflection angle 66 can be 45 degree of the path 32 away from the first light beam 30.Deflection angle 66 can be according to the first light beam
30 and the second relative angle between light beam 44 and change.
As shown in Figures 4 to 6, each of photosensitive unit 52 includes: at least one liquid crystal molecule 56, and by flexibility
The spacer chain 60 of hydrocarbon is connected to photo orientated (photoalignment) layer 62 for the polymer material being arranged on carrier-pellet 54
Azobenzene at least one photoreactive groups 58 it is adjacent.The photoreactive groups 58 of photosensitive unit 52 are in response in second wave length λ 2
Under luminous energy and undergo the reversible change from first the 70 to the second molecular shape of molecular shape 72.Specifically, it is in the first molecule
The photoreactive groups 58 of shape 70 make the adjacent liquid crystal molecules in liquid crystal molecule 56 be in the first orientation 74, and are in second
The photoreactive groups 58 of molecular shape 72 have the adjacent liquid crystal molecules in liquid crystal molecule 56 and are different from the first orientation 74
Second orientation 76.Liquid crystal molecule 56 is differently directed 74,76 ranges or gradient for making the presentation of photosensitive unit 52 have different value
Different refractivity.The photoreactive groups 58 of photosensitive unit 52 can be in response to the different from second wave length λ 2 of such as visible light
Luminous energy under wavelength and change back to the first one's share of expenses for a joint undertaking shape.As a result, it is this in the molecular shape of photoreactive groups 58 back
Variation resets the refractive index of corresponding photosensitive unit 52.Projector 40 can be provided under the wavelength different from second wave length λ 2
Luminous energy is to execute this function of reset.Function of reset can also be executed using additional source of light.
Therefore, the refractive index 78 of each photosensitive unit 52 changes according to initial pattern 38, to limit in lens array 50
Phase pattern 68, so as to be bent and focus the first light beam 30 in target 24 formed limit output beam shape 22 third
Light beam 69.Because lens array 50 focuses the first light beam 30 to form output beam shape 22 rather than cover or filter the first light
A part of beam 30, as is done in the prior, so essentially all of first light beam 30 is with the shape of third light beam 69
Formula is transferred to target 24.
The subject innovation further includes the method for operating dynamic lens 20 to generate output beam shape 22.Method includes passing through
First light source 26 generates the first step of the first light beam 30 with first wave length λ 1.The second step of method is to correspond to
The initial pattern 38 of desired output beam shape 22 generates control signal 36 by controller 34.Next step is that controller 34 will
Control signal 36 is transmitted to projector 40.The four steps of method is that second light source 42 is generated with different from first wave length λ 1
The second light beam 44 of second wave length λ 2.5th step be projector 40 spatial light modulator 46 according to control signal 36 by second
Light beam 44 is formed as initial pattern 38.Next step in method is light of the projection of projector 40 with second wave length λ 2 as the
Two light beams 44, the light with second wave length λ 2 have initial pattern 38.Beam combiner 64 is executed the using initial pattern 38
Two light beams 44 are reflected into the 7th step on lens array 50.Beam combiner 64 is also executed the first light beam 30 from first light source
26 are transmitted to the 8th step on lens array 50.7th step and the 8th step include " combination " the first light beam 30 and together
The wider step of two light beams 44.Method includes the 9th step, in the 9th step, adjusts lens array according to initial pattern 38
The refractive index 78 of each of 50 photosensitive unit 52, to generate phase pattern 68 in lens array 50.Method is with lens
Array 50 executes the tenth step and terminates, and the tenth step focuses according to phase pattern 68 and guides the first light beam 30, in mesh
The third light beam 69 for limiting output beam shape 22 is formed on mark 24.
Dynamic lens 20 can with such as in " the Computational Chemistry Modeling of Marshall et al.
and Design of Photoswitchable Alignment Materials for Optically Addressable
Liquid Crystal Devices. " 142LLE Review at 151 (2015) and/or U.S. Patent Application Publication
The adaptive mask of type disclosed in No. 2014/0252687 is used in combination.In this case, adaptive mask can be used
Output beam shape 22 in further solution target 24.
Two or more dynamic lens 20 can be with tandem compound further to solve the output beam shape in target 24
22。
Obviously, in view of above-mentioned introduction, many modifications and variations of the present invention are possible, and can be wanted in appended right
Implemented in a manner of being different from specifically describing in the range of asking.These leading narrations should be interpreted to cover of the invention new
Newness plays any combination of its effectiveness.Refer to that being intended to be included in right wants using word " described " in device claim
The antecedent of affirmative narration in the coverage area asked, and the definite article (" the ") before word is not meant to be included in the power
In the coverage area that benefit requires.
Claims (15)
1. a kind of for projecting the dynamic lens of output beam shape in target, the dynamic lens include:
First light source generates first light beam with first wave length,
Projector comprising second light source, the second light source, which generates, has the second wave length different from the first wave length
Second light beam and second light beam is formed as into initial pattern,
Focusing surface comprising: the lens array of photosensitive unit, in response to second light beam with the second wave length
Stimulation and reflect first light beam,
The initial pattern of the second wave length light from the projector makes the lens array of the photosensitive unit
Phase pattern is formed, to be bent and focus first light beam, to form the output beam shape in the target.
2. dynamic lens according to claim 1, wherein essentially all of first light beam is with the third light beam
Form be transmitted to the target.
3. dynamic lens according to claim 1, further includes: beam combiner, for will be from the institute of the projector
It states the second light beam to guide to the focusing surface, and first light beam is transferred on the focusing surface.
4. dynamic lens according to claim 1, wherein the first light source includes multiple laser diodes.
5. dynamic lens according to claim 1, wherein first light beam has at least about high power of 10kW.
6. dynamic lens according to claim 1, further includes: controller generates the control for corresponding to the initial pattern
Signal processed, and be configured to transmit the control signal to the projector.
7. dynamic lens according to claim 6, wherein the projector includes: spatial light modulator, according to
It controls signal and second light beam is formed as into the initial pattern.
8. dynamic lens according to claim 1, wherein the focusing surface includes: the lens array of photosensitive unit, is set
It sets on a carrier sheet, and in response to the stimulation of second light beam with the second wave length and described in variably refracting
One light beam,
Wherein, each of described photosensitive unit includes at least one liquid crystal molecule, at least one described liquid crystal molecule and company
At least one photoreactive groups for being connected to the photo orientated layer being arranged on the carrier-pellet are adjacent, and
Wherein, the photoreactive groups of the photosensitive unit are undergone in response to the luminous energy under the second wave length from first
Reversible change of the molecular shape to the second molecular shape.
9. dynamic lens according to claim 8, wherein the photoreactive groups include azobenzene.
10. dynamic lens according to claim 8, wherein the spacer chain includes flexible hydrocarbon.
11. dynamic lens according to claim 8, wherein the photo orientated layer includes polymer material.
12. dynamic lens according to claim 1, wherein the first light source includes the array of point source, in the point source
Each generate a part of first light beam.
13. dynamic lens according to claim 12, wherein be individually controlled the point source, and institute according to perspective view
State the corresponding part that perspective view makes each of described point source selectively irradiate the focusing surface.
14. a kind of method for operating dynamic lens, the dynamic lens include: first light source；Controller；Projector comprising
Second light source and spatial light modulator, and the light with second wave length can be projected；And the lens array of photosensitive unit,
With refractive index to use the control signal for initial pattern to generate the defeated of the first light beam with first wave length in target
Beam shape out, which comprises
First light beam with first wave length is generated by the first light source,
Second light beam with the second wave length different from the first wave length is generated by the second light source,
There is second light beam of the initial pattern by the projector projects,
First light beam and second light beam are combined on the lens array by the beam combiner,
Each of the photosensitive unit in the lens array is adjusted according to the initial pattern, in the lens array
Phase pattern is generated, and
First light beam is focused and guided by the lens array according to the phase pattern, to form institute in the target
State output beam shape.
15. the method for operation dynamic lens according to claim 14, further includes:
Control signal for the initial pattern corresponding to desired output beam shape is generated by the controller, and
The control signal is transmitted to the projector by the controller.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201662321300P | 2016-04-12 | 2016-04-12 | |
| US62/321,300 | 2016-04-12 | ||
| PCT/CA2017/000086 WO2017177310A1 (en) | 2016-04-12 | 2017-04-12 | High-power dynamic lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109073903A true CN109073903A (en) | 2018-12-21 |
| CN109073903B CN109073903B (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780022868.3A Active CN109073903B (en) | 2016-04-12 | 2017-04-12 | High power dynamic lens |
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| US (1) | US11106089B2 (en) |
| CN (1) | CN109073903B (en) |
| DE (1) | DE112017001981T5 (en) |
| WO (1) | WO2017177310A1 (en) |
Cited By (2)
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| CN112363255A (en) * | 2020-12-29 | 2021-02-12 | 信利(仁寿)高端显示科技有限公司 | But fly's eye lens and exposure system of automatically regulated illuminance homogeneity |
| CN114745488A (en) * | 2022-04-19 | 2022-07-12 | 信利光电股份有限公司 | Optical anti-shake system |
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| WO2020107107A1 (en) * | 2018-11-26 | 2020-06-04 | Magna International Inc. | High-power dynamic lens for additive manufacturing |
| DE102020123785A1 (en) | 2020-09-11 | 2022-03-17 | Trumpf Laser- Und Systemtechnik Gmbh | Method of processing a material |
| TWI825530B (en) | 2021-12-17 | 2023-12-11 | 普羅森科技股份有限公司 | 3d printer |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017177310A1 (en) | 2017-10-19 |
| US11106089B2 (en) | 2021-08-31 |
| DE112017001981T5 (en) | 2019-01-03 |
| CN109073903B (en) | 2022-05-27 |
| US20200285119A1 (en) | 2020-09-10 |
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